K&N Air Filter for tuned Lambrettas not using the stock airbox. This bad boy requires rejetting if you have already jetted your motor for a different filter as it sucks waaaay more air than anything else on the market.
Fit using a standard GP air bellows with the filter pointed towards the rear frame leg. We recommend a simple bracket to attach the end of the filter to the frame leg as it's quite long and heavy.
48mm air filter connection